Coffea
   Brief discussion of the genus (common name "coffee") and its cultivation.
   http://www.botany.com/coffea.html

Coffea arabica
   Characteristics of the coffee plant as an invasive species in Pacific island ecosystems.
   http://www.hear.org/pier/species/coffea_arabica.htm

Coffee
   Information on the ecosystems suiting this crop, its botany and cultivation, provided by Rambouts.
   http://www.rombouts.com/uk/coffee/ecosysteme.html

Coffee Plants: Arabica and Robusta
   An in depth look into the subject of the Arabica and Robusta coffee plants.
   http://www.thestarwoking.co.uk/articles/article.php?id=19

Coffee: Coffea arabica
   Characteristics of this evergreen shrub, its distribution and uses.
   http://www.beesfordevelopment.org/info/info/flora/coffee-coffea-arabica.shtml

The Coffee Tree
   Information on this tropical shrub, its varieties, flowers, leaves and fruit.
   http://www.justaboutcoffee.com/index.php?file=coffeetree